#515CB3#515CB3

#515CB3 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.0% C 0.137 H 275.1°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#515CB3
RGB	rgb(81, 92, 179)
HSL	hsl(233, 39%, 51%)
HSV	hsv(233, 55%, 70%)
CMYK	cmyk(54.7%, 48.6%, 0%, 29.8%)
CIE-LAB	lab(42.24, 21.27, -47.75)
CIE-LCH	lch(42.24, 52.27, 294.01°)
OKLab	oklab(51.02% 0.012 -0.1362)
OKLCH	oklch(51.02% 0.137 275.1)
XYZ	xyz(15.3546, 12.6573, 44.2731)
Luminance	0.1266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515CB3 #B3A851

analogous

#518DB3 #515CB3 #7751B3

triadic

#515CB3 #B3515C #5CB351

tetradic

#515CB3 #B3518D #B3A851 #51B377

square

#515CB3 #B3518D #B3A851 #51B377

split-complementary

#515CB3 #B37751 #8DB351

monochromatic

#2A3060 #3C458A #515CB3 #7C84C6 #A6ACD8

Accessibility & contrast

On white

5.95

#515CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#515CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515CB3

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515CB3	#FFFFFF	#000000	##FFFFFF
##515CB3	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3368B6

Deuteranopia (green-blind)

#2660B1

Tritanopia (blue-blind)

#206F7F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #515cb3;
/* rgb */ color: rgb(81, 92, 179);
/* oklch */ color: oklch(51.0% 0.137 275.1);

Tailwind

colors: {
  custom: {
    50: '#898aca',
    500: '#515cb3',
    950: '#000000',
  },
}

SCSS

$custom: #515cb3;
$custom-light: #898aca;
$custom-dark: #000000;

JSON

{
  "hex": "#515cb3",
  "rgb": {
    "r": 81,
    "g": 92,
    "b": 179
  },
  "hsl": {
    "h": 233.265,
    "s": 39.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.51021,
    "c": 0.13669,
    "h": 275.1
  },
  "luminance": 0.12658
}

Semantic roles & 50–950 ramp

primary

#515CB3

secondary

#C6C19A

accent

#C259CF

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515CB3

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →